Fuel pump rebuild

[lpcoating]

I just received my A2 fuel pump back from Then and Now Auto and thought I'd share the info. This was an NOS pump that I wanted rebuilt with materials that can handle modern fuel. I use ethanol free as much as possible but it's not always an option on some of our journeys. The mounting gasket was included with the rebuild. I'm happy with what they returned. They were nice to deal with and turned it around in 3 days.

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Guy

[Hambone]

If you don't mind sharing, how much for rebuild?

[lpcoating]

With the return shipping it was around $117. I'll look at the receipt when I get home.

Guy

[lpcoating]

If you don't mind sharing, how much for rebuild?

$105 for the rebuild.

Guy

[rickf]

Considering the price of an NOS pump that has been sitting on a shelf drying out for 40 years and has old rubber that is not compatible with todays fuels I would consider that an excellent deal.

[Horst]

yes, but isn't the only part out of rubber the pump membrane? The valves are some kind of plastic with a spring, AFAIK. Changing out that pump membrane should be fairly straightforward, no?

Over here we have up to 5% ethanol in normal pump gas and 10% in the E10 gas (which I am not using).

The other parts which could pose a problem are the float needle and the accelerator pump membrane I would think. I had the float needle stick in its seat a couple of times after not driving the jeep for a longer period.

[acudanut]

IMO 5 or 10 percent ethanol is not going to kill your fuel gaskets/pump over night. Over the years, Maybe.

[Horst]

Sorry but that is wrong. E10 can easily kill your fuel system in weeks or months.

[rickf]

In a long term test Haggerty insurance did a test of fuels and fuel systems to see if the ethanol in gasoline would affect anything in the fuel systems. They do after all insure many very old and VERY expensive cars. What they found was that in concentration up to 10% ethanol did not damage rubber or steel parts as long as they were in good condition when the fuel was introduced. The last part of that sentence being one of the key factors. Another key factor, and I got a dose of this last year in a BIG way, is the actual percentage of ethanol on the gas you are buying as opposed to what is claimed to be in there. On my way to the military vehicle rally at Graves mountain two years ago I stopped at my usual place to fill the motorhome with gas about 20 miles before Graves. I left the station after putting in 60 gallons of gas and got about ten miles and it fell flat on its face! Lost just about all power. I was close enough that I figured it was a clogged filter and I would deal with it at the campsite. This filter is in the most inaccessible spot known to man and is also a 1/2" fuel line so when you open it you get a bath running all down your arm. Most all of you know what gasoline feels like on your skin, This was NOT that feeling. It felt like a burning feel of raw alcohol! One of the guys at the rally had a test kit at his shop and he was going back there the next day so he brought it back and we tested the gas, 22% alcohol!!!!! Keep in mind that this was mixed with the 20 gallons still in the tank so the actual percentage of alcohol I got was even higher. And I got 60 gallons of it! A low compression 454 with a carburetor is just not going to run on this crap but I had to drive 365 miles back home on it with my foot planted flat on the floor! About melted the exhaust manifolds right off! They are both ruined. THAT is what will kill your parts, not the 10%. But that said the fuel pump is still working in the RV although I will change it before I go on another trip if I decide to even keep it.

[lpcoating]

Good discussion gentlemen. I did this for peace of mind. I'm going to be doing some other PM work over the winter and this was on the list.

Guy

[Mark]

When I buy alcohol free gas , I still put star tron in it.

[Lou]

Replaced the fuel pump in 2004, still on the same pump using E10 fuel. Holley carb accelerator pump diaphragm lasted 13 years. Really hate E10 for issues with small boat motors. But with my vehicles, have had no issues except for bad fuel economy and power loss. Oh yea, forgot last year had to change out all the rubber lines in the fuel system. New in 2004 but they had started to get hard on the inside, no visible cracks outside.